Zulfikar, Z. et al. 2019. Correlation between the Pollution Risk of Wells and the Presence of Escherichia coli Bacteria at Daroy Kameu Village Darul Imarah subdistrict Aceh Besar district in 2017. HIGIENE: Jurnal Kesehatan Lingkungan. 5, 1 (Aug. 2019), 22–31. DOI:https://doi.org/10.24252/higiene.v5i1.7315.